High-quality mechanical puzzles, direct from the designer!

Adalogical Ænigmas

Welcome, gentle solver!

Each month, I provide solvers around the world with a fresh challenge to their powers of logical
deduction in my series of Adalogical Ænigmas. In addition to its value as intellectual
stimulation, however, each ænigma also serves as a contest! If you solve an
ænigma during the month of its publication, you could win a free physical puzzle
from among the wares offered by Pavel's Puzzles!

What follows is a catalogue of all of the ænigmas yet made available to the solving public.
Each puzzle image links to one or more pages of content concerning that ænigma, including a copy
of the ænigma itself and, on occasion, a trove of useful pedagogical materials for those encountering
difficulties in solving it.

Ada has published a book!

Yes, that's right: Ada has created a book collecting the first twenty-four of her ænigmas,
along with author commentaries, full solutions, explanations of all of the Easter eggs, and a host
of other fun features!

Wish there were more Ænigmas? Now there are!

We are proud to present our new series, the Ænigmatic Addenda!
We are commissioning guest constructors to revisit some of the puzzle types
that Ada has previously introduced. You can read all about it here!

Want to hear about each new Ænigma as it comes out?

Join our mailing list! (We only use this list for Ænigma announcements.)

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First Name

Last Name

#46: August, 2017

#45: July, 2017

#44: June, 2017

#43: May, 2017

#42: April, 2017

#41: March, 2017

#40: February, 2017

#39: January, 2017

#38: December, 2016

#37: November, 2016

#36: October, 2016

#35: September, 2016

#34: August, 2016

#33: July, 2016

#32: June, 2016

#31: May, 2016

#30: April, 2016

#29: March, 2016

#28: February, 2016

#27: January, 2016

#26: December, 2015

#25: November, 2015

#24: October, 2015

#23: September, 2015

#22: August, 2015

#21: July, 2015

#20: June, 2015

#19: May, 2015

#18: April, 2015

#17: March, 2015

#16: February, 2015

#15: January, 2015

#14: December, 2014

#13: November, 2014

#12: October, 2014

#11: September, 2014

#10: August, 2014

#9: July, 2014

#8: June, 2014

#7: May, 2014

#6: April, 2014

#5: March, 2014

#4: February, 2014

#3: January, 2014

#2: December, 2013

#1: November, 2013

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Support the Ænigma!

Ada can only keep producing her ænigmas with your support!
For as little as $1 per month, you can help this series to continue.
Won't you please consider pledging to our Patreon campaign?

We deeply appreciate all of our patrons, of course, but here specially acknowledge these exceptionally generous super patrons: